Browser Setup for viewing 3D
YouTube videos, as linked on this site.

October 2014:

Due to various browser incompatibilities and other issues, the 3D
settings (the gear button) on YouTube videos has been problematic.
Often the 3D format controls don't work, so that your only
salvation is to download the native horizontally-squished side-by-side
video and play it on your computer though a program like Stereoscopic
Player ( 3dtv.at).

In order to get the 3D Settings to work online, for the following
browsers, you may need to: